Dr.Yokota is a professor of Business and Commerce from 2005 and Dean of the Graduate School of Business and Commerce (2021 -2023), Keio University in Japan. She was in Musashi University from 1995 to 2004. She received Doctor degree from the Graduate School of Business Administration, Keio University. She is interested in research of management control systems, management accounting and organizational behavior. Her books include "Management and Psychology of Flattened Organizations" (in Japanese, Keio University Press,1998)and "Management control of Japanese Companies"(in Japanese, Chuo-Keizaisha,2022).